Non-interference signal-box.



G. L FOOTE. NON-INTERFERENCE SIGNAL BOX. APPLIOATIOK FILED FEB. 1, 1911.1,043,81 8. Patented Nov. 12, 1912.

3 SHEETS-SHEET l.-

WIT/ 8558 1 INVENTUR I 9 9; L ZZ'OZ e Br G. L. FOOTE.

NON-INTERFERENCE SIGNAL BOX.

' APPLICATION FILED FBBJ, 1911. 1,043, 18.

Patented Nov. 12,1912.

3 SHEETS-SHEET 2.

m llllllllimlliiiii lllll IIIIIIH INVENTOR- I jag: Z30 f6 j er mqnllsrsG. L. room NON-INTBBFE RENGE SIGNAL BOX. APPLICATION FILED FELL 1911.

1,043,818. Y Patented Nov. 12,1912.

3 SHEETSSHEET 3.

WITNESSES I INVENTOR %M//@m% v 2 i Z M TTTORNEYS ESTATES PATENT onnion.

GEORGE nlroofrn, 'OFIIBRQOKLYN, NEWAYORK, ASSIGNOB T Gnomesroom ANDYoRKJ'n-x.

To all whom it may concern. I r

.Be it known that I, GEORGE L. Foo'rn,

a citizen of the United States, and a resident of=Brooklyn, -in thecountyof Kings.

, .5'a11'd State of New 'Yo'rk, have invented certain new and usefulImprovements in Non- Interference Signal-Boxes, of which the followingis a specification.

My invention relates to electric signaling 1'0 apparatus commonly knownassignal boxes or signal tran'smitters and particularly to 7 a thatspecial form ofsuch apparatus in .which a characteristic signal repeatedanumber of ,5 times;

. a. box. or transmitter of such character that when a number 'of themare used upon thefl 7 same circuit and one of them pulled-to transmit asignal, a second box pulled after the first will be. automaticallylocked out of action and have its signal stored and will,

1 {when the first-box completes. its action, be

1." automatically caused. to come into action 25. and send its signalthrough the normal I change. of circuit condition resulting from thecessation v of action of thev first-pulled box.

30 ca'use 'the boxes tooperate in such manner hat there shall be nomutilation or confusio'n of signals arising from the secondtilled boxtransmitting its signal before 33 1 "lete signal of the first-pulledbox.

' i iroiistriictithe apparatus that'wh-ilefthe secyftmiitlfliiilfletl'box may be locked from sending ready to act but will actonly invTduringflthe transmission of the signals afterthe nentlprevioujsly operating non-INTERFERENCE srGnAnnox.

Specification of Letters Patent. I

a signal wheel is employed adapted to send I Theobject of my inventionis to produce further object of my invention is to 'mitting' its signal.I

e lapse ofthe usual space following each Af'fiirther object of-myinvention is to so I al iithe actuating train of said box he firstbo xj,thereby preserving Y box shall have-sent its complete round of signals.

In'its main purpose preventinginterference between boxes operate'd oathesame clrcult, my invention resembles previous apparatu's' but differstherefrom in the essential features which will .1 be obviousto thoseskilled in the art froni-tlieisubjoirmd description taken inconnection.ivitlrthe accompanying drawings,

The invention consists in:thellconstruction and combinations of deviceshereinafter described and then. more particularly specified'in theclaims, i .1

In the accompanyingdrawings,L Figure 1 is anedge view v of the.nieclialiisn 'of. signal transmitter embodying my invention.

looking inthe;directionfoffthe arrow 1 of Fig. 2. Fig.2isa.frontelevationfot the same. F 3 is anfeleyationfof -,the parts backof the front plate ;and ',signa1 wheel. Fig. 4 is a vertical section onthe line :I V IV of.Fig.'3. Fig. Siillustfrates/a position of thesending lever. and adm n device after the box has been started and inthe. position which permits the same tosend, signal.

Fig. 6 shows the same lparts in po'sitionfor locking out a second bon inlcase the same has been pulled while the first box is' trans- ,Fig. 7 isa..perspective view of the'startinglevergi 1 indicatesa siggmal wheel ofthe usual'com struotion employed in the class of apparatus to which myinvention relates. Suchsignal wheel has notches in its edge suitablyspaced in groups and having inQeachqg'rOup V the proper number ofnotches to cause'thebox .to send its own characteristic The direction ofrotation, of this ,signal'fwheel in sending the signal is indicated bythe arrow and the notches as shown are adapted to cause the box to send.the signal No. '35,

.which as usual in this, class ofbdxes, is repeated, any desired numberof times to give what is called a round of signals,.usually fourcomplete signals. a

2 is a lookout or nonnterference. magnet which is normally. out of circut when the box is at rest, but 1s thrown 1 1l'1t0.-'C1IOll1l3,

. when thebox is pulled, the bfreaking of a'shunt normally completed.aroiiiid themagnet and circuit breakingldeviicesjby. which the signalistransmitted,as usual-fii gthe art. l he sig'nal wheel operat aua' signalPatenceanov;12;"1912. Aimucauon filed February 1,1911. seriaim. 6 5, 59.

J HENRY. Gin" nsommome BUSINESS A's FIRM or room, rrERsoN & COMPANY, or

character. Preferably I employ that form which Comprises a sending lever3 engaging the periphery'of the notched wheel so as to be actuatedthereby and in turn operating upon the contacts of a circuit breaker 4in such manner as to open the circuit when the lever drops into a notchin the wheel, but to cl'ose'the circuit when raised out of the notch. vhe actuating mechanism for the wheel maybe otjany desired form'but ispreferablyf a spring. operated actuating mechanism, the spr ng of which,indicated. at 6, is connected to a gear wheel 7, whichin turn gears withpinion 8 on the shaft 5 carrying. the signal wheel. The retardingmechanism. for retarding the actionfof, the spring-may comprise theordinary escapement wheel 11 upon a shaft 10, with which a gear wheel 9on shaft 5 is geared. The starting lever 16 operated by theusualpull-knob is provided, as indicated, with an are adapted to receivea pin- 15 on the wheel 9 or other wheel of the train to lock the.actuating mechanism against' operation until the pullknob'is operated tosend a signal. \Vhen the lever is lifted the pin being freed from thenotch permits the wheel 9 to rotate.--' The starting lever likewise isprovided wit-ha projection 17 adapted to ride. on azcollar. 18 of themain or other wheel "of the actuating mechanism and said collarisnotched at two points preferably, so that the-starting lever may dropinto. the notch and stop the revolutlon ofthe actuating mechanism whenthe signal wheel is revolved to send the signal the allotted or propernumbe'r of times.

The lockoutor nonrinterference magnet 2 is normally shunted and meansare provided for breaking said shunt and throwing the magnet nto circuitwith the-signal transmitting mechanism when the box is pulled.

Said means may comprise, as usual in the art, an insulating pin 40,carried by the jstarting lever and adapted to separate the shuntingsprings 11, thereby bi'eakinga normal shunt around the magnetand-contacts l of the signal transmitting niechanism'.

to mechanically engage and lock. some portion of the transmitting.rnechanismagainstoperation by the actuating-mechanism and leaving said;actuating train or mechanism free to (act signal wheel driven under the.control of the, remaining parts the apparatus. as.w1ll be, presently 1scrlbed. Sa d mechanical lockout deny: a simple form embodiesa lever 19t The apparatus further embodie'si -a me chanical looking orloclgputdevice adapted sending position, that is to say when it islifted by riding on the unbroken edge ofthe signal wheel or uponth'eteeth intermediate the notches in said wheel. Said lockout device is somounted or constructed as' to be without bias, that is to say it isadapted to retain either of,the positions into which it is thrown'unti-lit is thrown positively in the other direction. For this urpose thelever 19 may be freely pivoted with slight friction upon-its pivotalpin. .Its movement in one direction to lock the sending lever isproduced by an armature lever 14 which engages the rear of the lockoutdevice by' a pin 22 or other neans- The lockout device is thrown out ofaction by a device connected with theactuating train, as for instance apin 21 mounted upon the signalwheel 101' other memb'erof said train.When the lever is thrown to'"lock' out the box it will-retainits'lockout position until positively actuatedby the pin 21. Likewisewhen thrown back by the operation of said pin to the nonlockingpositionindicated in Fig. 2 it will automatically retain that position evenafter being freed from the pin 21 until it is thrown forward positivelyby the action of the lock-' tout magnet armature lever. I f the sendinglever be lifted fully and the magnet 2 be at the main line circuit bytransmission of sig-- nals from any other box, the armature 12 ofthemagnt is thrownback by the usual action of the spring. and the pin2'2 carried by the armature lever 14 will engage the'rear side of thelockout lever 19 and force the same forward, so that the shoulder 20will pass under the sending lever and hold the same lifted until the pin21 has resumed the position shown. or normal po itiom-and forced thelever 19 back. This normatposition is the position reached by theactuating train after the box mechanism has moved to an'extentsufficientto send a complete signal and has arrived at the normal position orposition ready for beginning the transmission of another signal "of thefour or more signals making a round. of signals fromt-he box. In thisnormal position the sending lever is free of theshoulder. thuspermitting said sending lever to rise and fall under the action of thesignal wheel when the latter is, rotating. When the sending lever dropsinto a notch and thereby opens the circuit and consequently dischargesthe .magnet 52. its'cnd falls below the "shoulder of the lever andthereby holds the l'ocli ou't'device in. inoperative condition, al-'i'ghilit is, at such time, en"gaged by the pmf'22, owing tothere-traction of the armat-urffe' 'lever14byits retracting spring. Theanimate leverjolf'the magnet. 2 also conjnedts with and operates upon adetent- 13 I d .1-.. MJ nan. LL

nal when released by the starting lever.- As

drawn forward and the lower end of the lever 14 1s pulled back, pawl 13is lifted from engagement with the teeth of wheel 11 -"and the signalbox mechanism is free to retate. 'When the magnet is discharged and thesending lever is at such time in nonsending position or litted,as shownin Fig. 6, which represents the position of the parts at one'stage ofthe operation of the box, the

v tation of the actuating train of the box, this i being due to the factthat the shoulder the lever 19 at suchtime is free to pass under the endof the sending lever, as shown in detent 13 will be permitted to engagethe escapement' wheel and temporarily stop the ror 6. If, however, whenthe magnet is c} charged, the said sending lever is in send position,that is depressed, it will prevent the detent from' moving intoengagement with the escapement wheel to temporarily stop the rotation ofthe "train, because the lever 19 will then engage the end of the sendingle- -ver and-the lower end of the armature lever will be prevented frommoving over, by en-, gagement of its pin 22 with the rear side of lever'19. y

f The general operation of theapparatus is as follows: ,Normally theparts stand in the. position shown in Figs. 2 and 3, the lockout device19,.armature lever 14 and pawl 18 being held in such position by theaction of the pin 21 upon the inclined projeption of the lockout deviceThe pawl 13 being then lifted from the teeth of the wheel 11, the boxtrain is free to rotateandsend the sig soon as thebox is pulled theshunt around the magnet and transmitter spring is rotate the pin 21passes beyond the projection ofthe lockout lever or device 19 and atfirst the sendingll'ever rides on the unbroken surface of said signalwheel 1. During this time, it hoot-her bon Phas been previously pulled,the circuitthrough the magnet 53 will remain unbroken and thellever 19being withoutbias, as described, will retain the position shown, or theposition in which the sendinglever will be free to fall whenever1tencounters a notch in the sending wheel. On reaching the first not-chthe sending'lever drops and the circuit through the springs lis brokento send the first'impulse of the signal No. 35. In dropping, the end ofthe'lsending lever 3 as before described,

drops into position to hold the lockout lever back although there ispressure by the pin 22 through the actionlof the retractor spring magnet2 is discharged the breaking of "Hie-circuit. This ion'isrepeated ateach he sendmg' lever,

first "box pulled will 'of the' 'airmature lever at the instant the lwhich is t on the mains wefore free to follow'the signal .1 long as themagnet re-- :ged while the lever is in fully l m on. As will fbeobvious", when said is; fully liftedj'the magnet-2 can only bedischarged'by the -'breaking of the main line circuit. by thetransmission of signals by some other box. in the absence therefore ofany otherhoir. being pulled, the

' insn'iit its signal having completed zit interference dhu will hebrought to rest automatically by ting let engagir pin at which i roperlypositioned for 1 ise, 'fi'lii arrive agam tit-normal polever or (it use19. Shouldanother. box on the same be pulled after. tlie hi'st is inoperation, the rill start into op- "er will ride at am hi the sig .by atransmission originating in the first box, said armature will-..force'the lockoutdevice over, bringing the shoulder; under the end ofthesending lever, which-position, the lever 19, being without bias,.willretain, thusho-lding the sending lever up and pre-' venting it fromsending any signals:- The armature 12 of the second b ox will: howeverbe caused' to vibrate by the. interruptions of circuit of its magnetwhich has been thrown into the eircuitby [the 'act of pulling suchsecond box: Every time the armature drops back bythe breaking of circuitthrough the magnet of th'e fsecond box. the stop pawl or dog 13 willdrop into a tooth of the escapementwheel l'land tem- "porarily preventrotation ofthe mechanism of the second box. "Therefore;- itwill be roundof four or more complete signals,

men opposite theprojection onthe'lo'ckout seen, that while the first boxis sending, the

second will be prevented from sending, and while the signal wheel. ofthe first-pulled" box is rotating continuously, the'actuating train ofthe second-pulled'b'ox is only rotat-" ing intermittenth owin totheflvibration of the armature 12 under the influence of the signalssentby the first-pulled box; By this means, the main or driving springis prevented-from running down-and its power is conserved for thesending of the signals when the box is pulled; In the meantime. thefirst-pulled box completes its round of signals; as already described,and its startsition and closes the shunt around t-he'mech- 1- inglever-automatically resumesnormal poanismof said -box.- .Thearmaturexlzof the magnet in the second-pulled box is now held up by the current "onthe ci'rcuit,lw.hidh curthe sending lever, which can then send its"signal.- N o matter in what position of the wheel 1 of the, secondbox'the first boxstops sending, the sender 3 of the second box cannotoperate until the beginning of its signal, inasmuch as it will beheldlocked up until the actuating train has brought the pin 21 around thezero or normal starting position.

and has forced the lookout lever 19 overto release the sending lever.Should it happen that the mechanism of the second-pulled box rotates sofar as to throw oil thelockout before the first box completes itssignal, said lockout will again be brought into action to lock out thesender lever at the first interruption of the circuit by thefirst-pulled box and in the'manner. just described.

No matter how many boxes be pulled at or about the same time, the onewhich first breaks the circuit byits sending lever will automaticallylock out all of the othersand will go on and complete its round ofsignals, As soon'as its mechanism is restored to normal, the train isstopped by the stop lever 16 and the circuit will be placed by saidfirst operating box, in normally closed condition, and thatgone of theother boxes' whose pin 21 first reaches'normal position will have itslockout restored ,to normal position and said box will start in tooperate in the normal the Way, since the magnet of said box istadaptedto respond to' the normal signaling current and will therefore draw upits armatureand hold the stop 13 out of the teeth of the wheel 11 of theactuating train and the operation of said box will then'proceed in justthe same way as if it werethe only bo'xthat had been pulled. Theremaining boxes will be stillv retained in locked out-condition butready to cut in on the circuit and send their characteristic signals inthe order in which their pins 21 respectively reach normal position.Should it happen that the signal wheels of any two boxes begin arevolution at identically the same instant and break circuit at the sameinstant, the one having the greater-number of notches in its initialgroup will seize the line and send its" signal without mutilationbecausethe first "interruption of circuit produced afterthe' number of notchesin common has run out will lock out the box having the smaller number inthe initial group, the sender lever 'arepulled at or about t e same timeand of the latter at Such time riding on the space segment betweengroups of notches. After box so-seizing the line has completed an mamatl'm lmY- with the smaller initial terrupted or delayed.

signals is produced, since any locked out tion of signals necessary tocomplete its round it its round has been interrupted. In the case ofboth boxes however, all'the signals will be complete, although the roundof signals of one or both may have been in- 7 hat during the o era-'tion of onebox in' sending its round 0 signals, the mechanismof.other.boxes which in the meantime have been pulled will be 7 running,but only intermittently, so that they cannot move suificiently toexhaust the 'It will be observed necessaryfaction of the power insending at least the final one of the round of si als.v Thus, forinstance, if a second box "s 'ould be pulled immediately after'thefirst, the cam 18 on the second, would bepermitted to move only apart ofthezway necessary to bring its notch under the pin 17 of the-startingver andsaid second-pulled box would 8 therefore send at least the finalsignal of its round of four and said signal would be a complete, owingto the fact. that the lockout is only thrown off when the signal wheelis at normal or zero position. l 9 As'will be seem-the individual signaltransmissions coming over the line from thebox first pulled act in'asecond-pulled box through the pawl 13 operating the stop device to delaythe action of the actuating 9 train. But in the case of the first-pullebox or, the one acting in .its normal manner to transmit" its'signals,-it is desirable that thegear train of said box should moveun-- interruptedly. This is accomplished as will be seen by renderingsaid stop mechanism inoperative at each transmission, since each timethe sender lever drops to break the circuit andthereby discharge themagnet 2, the lever 14 will be held 'from'operating thestop 13 by reasonof the engagement of pin 22 with the lever 19, which at such time isblocked by the depressed end of the sender lever. In all cases it willbe seen that no confusion of signals can arise from the characteristicsignal of one box following the characteristic signal of a previouslacting box before the usual space whic should follow or exist betweencharacteristic box is unlockedonly when its signal wheel reaches-thenormal or starting position and the segment of the. signal w eel onwhich the sending lever first rides is suflicientl prolonged to cover atleast the usual or a lottedterminal space following each char--acteristiesignal and serving to space characteristic signals from one,another.

Should it happenthat number of boxes that "one or more of them may haveits sending lever held up so long that its mechanism, intermittentlyrotating as described:

signals. When the key isso used. an initial st rument.

wheel 1, and thereby have lllOYttl to position where the lever to wouldbe permitted to drop and stop the. rotation ol the ll]ttll21 nism, thusrequiring the box to be pulled again; such action will be prevented bythe loekoutdever locking the starting terer from dropping. throughengagementv 01 :1.

period will go on withoutinterruption to resume its round or cycle ofactions and will be ready to send its own signal as soon as. the signalsstored in the other box or' boxes, ishetl.

\Vhen boxes constructed -in accordance with my invention are used upon acircuit. signals may be sent over said circuit at any time during theoperation ot a box or a series of boxes by the usual signaling keywithout so far mutilating the signals being transmitted by a box as torender the-same unreeognizable on the receiving tape or in- ,lhus torinstance. in the case of boxes used on a tire alarm circuit.'a tirechief may utilize the circuit for sending sig nals by a Iilorse key atany time while a box is in the act of Stlltllllg' itscharacteristic orbeing transmit-ted. have been tin prolong'ed depression of the key toopen the circuit will. lock out. the box wlneh is m the act. of sendingits signal because the lockout device will engage beneath the sendinglever as soon as the signal wheel l raises the same to non-sendingposition and the subsequmit makes and breaks o'l circuit produced by theop ration of the key will all'eet said box in just the same way thatsaid box altects the operation of the olhei" boxes which have beenpulled and as already deseribed; 'As soon as the manipulation of the keyceases. the circuit will resume its normal conditionand' the boxwhosepin it first reachesnormal posit-ion'will cut in on tlrocircuit andresume the sending of the characteristic signals of its round. The act'of looking out the box bythe first.- break ofeircuitproduced by thesignaling key may, itisi't rue. mutilate one of the characteristicsignals constituting the round ot Signals sent by said box. but heremaining eharacteristie signals of the round will be unmutilated andmay be read upon the receiving tape.

'hat I claim as my invention is: g

l. In a non-interl'erence signal box. the combination ol' a signaltransmitting mechanismuan actuating mechanism therefor-. 11 mechanicallockoutdevice adapted to mechanically engage aml lock-some portion ofthe Signal transmitting mechanism out of ope 'ation by the actuatingmechanism, a main line magnet having an armature adapted o throw saidmechanical lockout device into lockout position and means carried by theactuatingmeohanism tor restoring the lockout deri e to normal positionto tree the signal transmitting mechanism at the-terminalion ot' eachcomplete movement ot' the actuating mechanism requisite l'or sending aeomplete signal. I

2. In a non-interterenee signal box. therombination ot -a signal wheeland actuating mechanism tlieretor. a signal transmitting mechanismoperated by the signal wheel and embodying a sendingleyer. a meehani callockout device adapted to engage with and lock the sending lever innon-sending position. said lockout de iee jbeingwithout bias and anon-interterence magnethaying an armatureadapted to' engage and throw.the loekoutdevice into locked out position its lockout position duringsubsequent moremerit ot the armature andaneans eontrolled by saidarmature tor intermittently' interrupting the movementof, the actuatingmechanism of the box. at each subsequent interruptimi of the circuitproduced by anolhcl' boX.

1 l. in a iion-intertereiice signal -box. the combination with theactuating. mechanism and signal transmitting mechanism. :ot' means forlocking the signal transmitting mechanisi'n out of action when thebox ispulled during operation of another box onthe same cireuitand means ."torintermittently interrupting thetmeration of said actuating mechanism ateach interruption of the circuit" produced by another box while engagedin sending a signal.

5. In a 'non-interfere:ieesignal box. the combination ot-a main linemagnet. means controlled thereby t'or preyenl'ing the box fromsendingits signal during rotation of the. 'driying, or actuatingmechanism-and means for interrupting the nm ement of said actuatingmechanism at each interruption of the main line circuit produced byanother box throughout its operation in sending signals.

ti. in a iuan-interterenee signalbox. the combination of an actuatingmechanism. signal transmitting meehanisin. a magnetically controlledlockout for locking saidsignal transmitting mechanism out ol operationupon interruption ot" the mainline circuit from another box and meansresponsive to eaeh closure and interrupt-ion ot the main line circuit,due to the sending ot sigras from another box for intermittentlyinterrupting the operation of the actuating mech-' anism in the lockedout box.

7. In a noninter:terence signa ox. the

combination with the actuating train, of

means for freeing the same nal. a sending; mechanism operated thereby.

to send the siga magnetically controlled lockout for loclvlockout devicecontrolled thereby for en gaging and holding the sending lever ininoperative position and adapted to retain its lockout positionindependently of the main line magi'iet. and means for automati' callyrestoring said lockout to normal position when the actuating mechanismof the -mechanism of the stop inoperative to stop the train.

box reaches normal.

'9. In a norrinterterence signal box. the combination of a signal wheel,a sending lever actuated thereby, a mechanical lockout. device adaptedto one go and lioldihe sending lever in inoperative position and meansresponsive to signals from a distant box for stopping the rotation ofthe signal vvheel and its actuating mechanism atv each interruption ofcircuit.

10. In a non-interference signal box. the combination of a sending;lever. an unbiased mechanical loclrout device theretor. means responsiveto interruption of the main line circuit for throwing said lockoutdevice into position tor engagement by the sending lever and'meansconnected. with the actuating box for restoring the un' biased lockoutto normal position to tree said sending lever.

1.1.. In a nmi-intertereiice signal box. the combination with a signaltransmitting device, of means responsive to-signals coming over the linefor rendering the same inoperative, an actuating train and means forpermitting intermittentoperation of the actuating,- train throughout thetransmission of signals by another box and While the said signaltransmitting device remains inoperative.

12. In a non-interference signal box the combination of anintermittently acting stop for the actuating train, a controlling ma netin the signaling circuit and means controlled by the sending" portion ofthe-box and acting at each signal transmission by said box forautomatically rendering the 13. In a non-interference signal box, thecombination of a lockout device, means tor rendering said lockout deviceinoperative at each normal interruption of circuit pro duced by atransmission. and llltitllSdhJl throwing said lockout device intolockout position upon prolonged interruption (at the main line circuitand to leave it in such position during subsetpient normal interruptionsof the main line circuit pl'OtlllCGtl by another instrument. v

Ll. The combination in a non-interferencc signal box, of an actuatingtrain, means con trolled by a magnet on the main line for per'mitt-innintermittent operation of the train throughout the transmissionof signals from another box and means for holding the intermittentlyacting devicesout of operation during the operation oi? the actuatingtrain in sending signals.

15/111 a non-intertercnce signal box. the combination of a sendinglever. a signal wheel and a lockout device for locking the sending leverwhen raised by the signal \vheel. said sending lever being adapted tohold the lockout device out of action when the sending lever drops tosend the signal.

16. in a non-interterence signal box. the combination of a sending"lever. a mcchanical. lockout device therefor inn-mall out of engagementwith the sending lever but adapted to be thrown into position to engageand hold the same inoperative. an ac-' tuating' mechanism for operatingthe sending lever, amain line magnet controlling the position of thelockout device and means governed by said magnet for prmlucin; a delayedmovement of the actuatingmechanism throughout its stages of movement.

wherein it is adapted to operate the stfllt'lilig.

lever.

17. In a non-intertorcncc signal box, the combination of a loclmutdevice. signal sending mechanism. means connected with the signalseinlino mechanism for throwing ott the lockout after each transmissionof a complete characteristic signal. a stop controlling the movement ofthe actuating train and a magnet in the main line circuit for holdingthe stop out of action and means controlled by 'the sending mechanismfor holding the step out of action at each individual transmission.

18. In. a non-interference signal box, the combination of a lockoutdevice, a controlling magnet thcretor. an actuating train. means torpermitting intermittent operation oft said train in response tointerruptions of 'main line circuit produced by another box while thesaid lockout device retains thc'.lockout PUSLtlUIl, mechanism forautomatically stopping the actuating train when the box has completedits round of signals and means for holding said mechanism outof actionat-the completion of the round, if the lockout device he at that time inlockout position.

19. In a. non-interference signal box, the

' into lochq circuit th eat ioinbii tion signai wheel,

e sending lever the compleinally shunted, means for opening said shunt'autoiuaticuiiy when the box is pulled and necha. for throw incontrolled bi 'said magnetn he shouldered-locking devic sition uponinterruption of the magnet, occurring when the V we? is in liftedposition.

at in non-.ntert'erence signal box, the conib'in n of a normally shuntedmain line magnet, a signal Wheeland actuating :nechanis i therefor,means for automatically breaking the shunt of said magnet when the boxis started, sending devices mechanically actuated by said wheel, alockdevice not wally mechanically disen i on": the sending devices andmeans for throwing said locking devices into position to reta n thesendingdevices in'inoperative pasidzion upon an interruption of thecircuit thrnugh said magnet and throughout subsequent. ma es and breaksof circuit through said In L let, and means for releasing and stoppingthe actuating train at each make and break of circuit produced byanotherhox while said sending mecha nism is locked out of action.

21'. In a non-interference signal box, the combination of sending lever,a locking device adapted in one position of the send ing' lever toengage beneath and hold the same'lifted, and in another position to lockagainst and be itself held out of action, and a main line magnet havingan armature mounted independently of said lockout device and. adapted toengage the lookout device {and throw it into locking position on signal,a mainline magnet normovement of the armature in one direction, saidarmature being free. to vibrate 'while the lockout device retains itslockout posii011; 1 I

In a: non-interference signal box, the combination of signal sendingmechanism and an actuating train therefor, a lookout device for lookingthe sending mechanism out of operation, a main lineinagnet maintained inc'ircuitiduring the operation of the'box and adapted on interruption ofsaidcircuit at another point to bring the lockout mechanism intooperation and means controlled by said magnet for stopping the,

movement of the actuating train at each interruption of circuit"produced by the normal signal transmissiensfrom another box.

23. Ina non-interference signal box, the combination of a lockoutadapted in one position to prevent the transmission of signals and inthe other to allow the box to act and transmit said signals, a'main linemagnet having an armatureadapted to vibrate at each interruption andclosure of the main line circuit and throughout the whole operation ofthe box, after the box is pulled, means connected with said arma- ,turefor throwing the lookout device into lockout position upon interruptionof the main line'circuit and adapted to leave it in such position duringsubsequent interruptions affecting said magnet and armature and meansconnected with the transmitting mechanism for throwing oil .the lockoutdey vice after the transmission characteristic signal.- p Signed at NewYork city in the county of New York and State of New York this twentyseventh day of January A. D. 1911.

cnonsn L. FOOTE.

of a complete l vitnesses WM. R STOUT, FREDERICK S. BORDEN.

